são paulo report and some considerations.
we try this one here in são paulo. the nano vacations.
don’t let you misleading by the nano scale. ok, it’s small (the diagram is 1/1) inexpensive 2$+ecofootprint, and can be mostly scavenge in a city.
still on the scale perspective and scales we don’t see, most of our electronics work on micro, nano or pico scale but the above inexpensive ecofootprint can be bigger than the 2$.. can be a 2K$.. we just don’t know.. I didn’t make the maths on the energy embodied nor the ecological impact of our tools.. how many tons of minerals are dig from mountains and were are this mountains?
we extend the live of some materials but we also use a small % of new materials.
we also got “bugs” on the electronics hehehe in january I got this
20 tip 120 on a electronics market in beijing by 10$. when you connect 12v to them they just blow.. so insted of a tip120 darlington transistor I got 20 units of a 12V non reusable bomb that gives a blasting sound. if this is exactly what you were looking for, I can sell them to you:p
so we just setup the watering system without the nano blasting board.
wau, what a place.. full with electronics, friendly people and geeky too :) being geek is one of the most intensify intellectual activities in our days apart of fun, open and creative. thank’s guys ;) you will be a great partner of the SP re:farm group.
back to the small, pretty board: the idea is just to have some control over a system that has a bottle that recovers rain and a windshell water pump that handles the watering. the moister sensor (has a tribute to this guys) was made with local materials.
we got this boxes on a country fair around the corner.
daniela brought her used filter,
we got the water pump 2 doors away by 10RS
we got the soil from an hippic place
the bottle was gently offered by a local store (it’s amazing how people give you things when you ask materials to make a urban farm :)
in 3 days we got local materials, build one re:farm, one vermi-composter, eat good food, good drinks and of course made new friends :) looking forward to come back heheh